Wall Street

Stocks took a beating on Wednesday, with the Dow and the S&P 500 falling more than 2 percent before bouncing back slightly. Money flowed into safe haven investments such as U.S. Treasuries.

Author Michael Lewis says high-frequency traders have figured out a way to game the system. Some of those traders say that while there are "bad actors," high-speed trading plays a legitimate role.

A reporter shadowed eight young people during their first two years on Wall Street, when the bailouts were still fresh and anti-Wall Street sentiments were running high.

Actor Leonardo DiCaprio, who stars as a high-living stock swindler in The Wolf of Wall Street, tells NPR's David Greene that it was "incredibly freeing" to play a character with no moral high ground.

Twin challenges — a shift in opinion about the stock by an influential research firm and a YouTube clip of a fire that destroyed a Tesla Model S — seem to have shaken investors a bit.

In a tweet, the 200-million-user microblogging service said it had confidentially submitted the paperwork for a planned IPO.

Also being removed from the widely watched index: Hewlett-Packard and Bank of America. Being added: Visa and Goldman Sachs. The changes reflect not only the companies' fortunes, but also the changing nature of the U.S. economy.

The stock exchange received a deluge of data that overwhelmed its systems and shut down trading for three hours, last week.

The tech-heavy exchange shut down at around 12:14 p.m. ET due to a problem in a data feed.

"We didn't feel any malice" toward Tourre, a juror said. "We felt sympathy at times."